package com.ddone.demo.mapper;

import com.ddone.demo.bean.Customer;

/**
 * @author ddone
 * @date 2024/3/18-16:14
 */
public interface CustomerMapper {
    /**
     * 客户id查询客户和客户的订单信息
     * @param customerId 客户ID
     * @return 客户信息
     */
    Customer queryCustomerById(Integer customerId);

    /**
     * 分步查询测试
     * @param customerId
     * @return
     */
    Customer queryCustomerById2(Integer customerId);
}
